Outline L 1-w1T - Lecture notes 1 PDF

Preview

Summary

Lecture outline...

Description

CS 354 - Machine Organization & Programming Tuesday, January 21, 2020 Waitlisted? Complete the form at: https://forms.gle/c8NEzEPx69hF8AMk6

Instructor: Jim Skrentny, 5379 CS, [email protected] Lectures

 Lecture 1: 2650 Humanities, TR: 2:30 PM - 3:45 PM  Lecture 2: 2650 Humanities, TR: 4:00 PM - 5:15 PM Description An introduction to fundamental structures of computer systems and the C programming language with a focus on the low-level interrelationships and impacts on performance. Topics include the virtual address space and virtual memory, the heap and dynamic memory management, the memory hierarchy and caching, assembly language and the stack, communication and interrupts/signals, assemblers/linkers and compiling.

Today Course Info and Coursework Java vs. C Coding in C Remotely Get Connected to CS Edit your Source Compile/Run/Debug/Submit Next Time Topic: C Program Structure and Control Review: (note: web alternatives to K&R posted on Piazza) K&R Ch. 2: Types, Operators, and Expressions variable names, data types, constants, declarations arithmetic/relational/logical operators, assignment, precedence K&R Ch. 3: Control Flow statements & blocks, if-else & else-if, switch, while, for, do-while K&R Ch. 4: Functions & Program Structure basics, parameters, return values, scope rules Do: read course “Information and Policies” pages linked to course website access CS Linux lab computers, try Linux commands and tools (vim, gcc) check out course Piazza site

Copyright © 2016-2020 Jim Skrentny



Course Information  Course Website: https://canvas.wisc.edu/courses/176646 Textbooks

 The C Programming Language, Kernighan & Ritchie, 2nd Ed., 1988  Computer Systems: A Programmer's Perspective, Bryant & O'Hallaron, 2nd Ed, 2010 Piazza

 is used for online course discussions and questions with classmates and the TAs about homeworks, projects, exams, and course concepts as well as course logistics CS Account

   

provides access to CS Linux Computers with C tools (rooms 1366, 1355, 1358, 1368) should be same user name/password as your prior CS 200/300 accounts must be activate your CS account IF YOU ARE NEW TO CS (see TA during lab consulting) is needed to access your CS 354 student folder used for some course projects

TAs: Teaching Assistants

 are graduate students with backgrounds in computer architecture and systems  help with course concepts, Linux, C tools and language, homeworks and projects  do consulting in 1366 CS Linux Computer Lab during scheduled hours, which are posted on course website’s “TA Consulting” page PMs: Peer Mentors

 are undergraduate students that have recently completed CS 354  hold drop-in hours and do a variety of activities to help students succeed, which are posted on course website’s “PM Activities” page Coursework The first page of each lecture outline will have reminders of coursework deadlines. Exams (55%)

 Midterm (~15%): Thursday, February 20th, 7:30 - 9:30 PM  Midterm (~18%): Thursday, April 2nd, 7:30 - 9:30 PM  Final (22%): Wednesday, May 6th, 5:05 - 7:05 PM Conflict with these times? Complete the form at: https://forms.gle/JmkErVN3LmPsHXYG6 Projects (30%): 6 projects, 3-8% each, posted on course website Homeworks (15%): 10 homeworks, 1.5% each, posted on course website

Copyright © 2016-2020 Jim Skrentny



Java vs. C

Java

C

designed for safety object oriented interpreted high level references garbage collector exception handling

Copyright © 2016-2020 Jim Skrentny



Coding in C Remotely - Get Connected to CS  The CS Linux lab computers are to be used for CS 354 programming.

Access CS Linux Computers Windows: Macs:

get ssh program like MobaXterm and configure to connect to CS machines open terminal and enter ssh @

machine names: best-linux.cs.wisc.edu (Macs might cause issues with security certificates) emperor-01.cs.wisc.edu through emperor-07.cs.wisc.edu rockhopper-01.cs.wisc.edu through rockhopper-09.cs.wisc.edu royal-01.cs.wisc.edu through royal-30.cs.wisc.edu snares-01.cs.wisc.edu through snares-10.cs.wisc.edu

Use some Linux command shell

 How do you: list the contents of a directory?

Show details?

display what directory you’re currently in? copy a file? remove a file? move to another directory? Up a directory? make a new directory? rename a file or directory? remove a directory? get more information about commands?

Copyright © 2016-2020 Jim Skrentny



Coding in C Remotely - Create your Source 1. Edit your Source File $vim prog1.c $vimtutor

 Why vim?

/* title: First C Program * file: prog1.c * author: Jim Skrentny */

#include #include #include

// for printf fprintf fgets // for malloc // for strlen

int main() { // Prompt and read user's CS login char *str = malloc(50); printf("Enter your CS login: "); if (fgets (str, 50, stdin) == NULL) fprintf(stderr, "Error reading user input.\n"); // Terminate the string int len = strlen(str); if (str[len - 1] == '\n') { str[len - 1] = '\0'; } // Print out the CS login printf("Your login: %s\n", str); return 0; }

Copyright © 2016-2020 Jim Skrentny



Coding in C Remotely - Compile/Run/Debug/Submit 2. Compile $gcc prog1.c

OR $gcc prog1.c -Wall -m32 -std=gnu99 -o prog1

3. Run $a.out

 Why a.out? OR $prog1

4. Debug

5. Submit (required for projects)

 Download your source from the lab computer to your local machine Windows: drag and drop in MobaXterm window Macs: scp @:/path/to/remote/directory/file /path/to/local/destination

 Upload your source from your local machine to the course website

Copyright © 2016-2020 Jim Skrentny

...